Due to skype issues we needed to find an alternate option to communicate during arenas today. Our guild has a ventrilo server, version 2.1.4 but it sux with win7 so we tried out the built-in voice chat... It wasn't bad srsly. I thought it hurts, but it doesen't! Never used teamspeak anyway, ppl say its kinda nice as well, but I can really recommend the wow voice chat. Just make sure that u configure it the proper way.